EP3990797B1 - Drum brake for vehicle - Google Patents

Drum brake for vehicle Download PDF

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Publication number
EP3990797B1
EP3990797B1 EP20735127.1A EP20735127A EP3990797B1 EP 3990797 B1 EP3990797 B1 EP 3990797B1 EP 20735127 A EP20735127 A EP 20735127A EP 3990797 B1 EP3990797 B1 EP 3990797B1
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EP
European Patent Office
Prior art keywords
brake
drum
opening
drum brake
brake according
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EP20735127.1A
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German (de)
French (fr)
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EP3990797A1 (en
Inventor
Christian Volz
André TESKE
Stefan Heinz
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Continental Automotive Technologies GmbH
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Continental Automotive Technologies GmbH
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Publication date
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Publication of EP3990797A1 publication Critical patent/EP3990797A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/0031—Devices for retaining friction material debris, e.g. dust collectors or filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
    • B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
    • B60T1/067—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels employing drum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
    • F16D51/16—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis
    • F16D51/18—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes
    • F16D51/20—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
    • F16D2051/001—Parts or details of drum brakes

Definitions

  • the invention relates to a drum brake for a motor vehicle with a rotatably mounted brake drum, with a friction surface pointing radially inwards, with brake linings arranged radially inside the friction surface, with an actuator for prestressing the brake linings against the friction surface and with an anchor plate for holding the actuator an opening for discharging brake dust from the brake drum and having a cover for the brake drum.
  • the U.S. 1,974,565 A refers to a drum brake for motor vehicles that is quasi-hermetically closed and sealed using special sealing means, comprising a rotatably mounted brake drum, with a friction surface pointing radially inward, with brake linings arranged radially inside the friction surface, with an actuator, not described in detail, for prestressing the brake linings against the friction surface and with an anchor plate, the anchor plate sealing the brake drum quasi-hermetically together with the sealing means.
  • a specially designated bag for collecting concentrated brake dust is not described anywhere.
  • a generic drum brake is from WO 2018/054821 A1 known.
  • this drum brake an opening with a horizontal axis is arranged on the cover directly on the brake drum, to which a suction device provided with a dedusting unit is connected.
  • the suction device has the task of sucking off accumulating brake dust and preventing its emission into the environment.
  • the invention is based on the problem of developing a drum brake of the type mentioned at the outset in such a way that the brake dust can be easily removed.
  • this problem is solved in that the cover delimits a pocket for collecting brake dust.
  • the pocket allows accumulation of brake dust. After a specified time or a specified filling level of brake dust, this can be removed from the pocket via the opening, for example by suction. It is particularly easy to remove the brake dust from the bag. Therefore, continuous suction is not absolutely necessary.
  • the pocket is structurally particularly simple if the opening is at a distance from the bottom area of the cover.
  • the brake dust collects under the opening due to the force of gravity, so that an exposure of the opening does not lead to an unintentional escape of brake dust. Because the opening is spaced from the bottom portion of the lamination, accidental release of brake debris upon removal is avoided.
  • the removal of the brake dust is particularly simple if the opening opens into a collecting funnel protruding into the pocket.
  • the collecting funnel enables the resulting brake dust to be collected.
  • the brake wear is thus removed from the mating of the brake pads and the brake drum as it arises and collected in the collecting funnel.
  • the flow can be influenced when dissipating the brake dust by means of the collecting funnel.
  • the collecting funnel is arranged between two brake pads and directly above the inside of the brake drum and has a trough shape for collecting the brake dust.
  • the dimensions of the pocket can be easily limited if the cover has a vertical section, if the vertical section forms a partial area of the pocket and if the opening is arranged above the vertical section.
  • the cover has a particularly simple design if the anchor plate and the cover are manufactured in one piece.
  • the drum brake is particularly cost-effective if the opening is closed by a plug.
  • the plug can be removed during inspection and a suction tube inserted into the pocket to suck off the brake dust.
  • the invention helps to simplify a continuous or discontinuous removal of the brake dust if the opening has a connection for a suction line.
  • the suction line can be removed, for example, when inspecting the Connect the motor vehicle to the outlet or keep it connected at all times for continuous suction.
  • continuous extraction of the brake dust is particularly easy if the opening is connected to an air filter.
  • the arrangement of a suction fan that is to be installed separately can be avoided if the opening is connected to an intake tract of an internal combustion engine.
  • the brake dust is held back in the air filter that is already present.
  • the pocket helps to simplify the extraction of brake dust if the pocket has a section on its top that is inclined relative to the vertical section and if the opening is arranged in the inclined section. This design ensures that the bag can be accessed from above.
  • the suction line can easily be permanently fixed to the opening if the opening has a pipe socket.
  • figure 1 shows a simplified longitudinal section through a drum brake 1 of a motor vehicle with a rotatably mounted brake drum 2 and a friction surface 3 pointing radially inwards.
  • the brake pads 4 are arranged in pairs, as in the figure 6 is shown.
  • the brake pads 4 are held on an anchor plate 5 and can be pressed against the friction surface 3 by an actuator 6 .
  • the anchor plate 5 has a cover 7 that overlaps a portion of the brake drum 2. Between the brake drum 2 and a vertical section 8 of the cover 7 there is a pocket 9 in which brake dust accumulates.
  • the anchor plate 5 has an opening 11 in an inclined section 10 arranged above the vertical section 8.
  • the cover 7, which is manufactured in one piece with the anchor plate 5 in the present exemplary embodiment, seals the pocket 9 from the environment, so that an entry of brake dust into the environment is prevented becomes.
  • figure 2 shows the lower part of the drum brake 1 enlarged figure 1 in the area of the opening 11.
  • the opening 11 is closed by a plug 12.
  • FIG 3 shows schematically a suction cup 13 for connection to the opening 11 figure 2 .
  • the teat 13 has a suction line 15 for insertion into the opening 11, a blower 16 and an air filter 18.
  • the suction line 15 is inserted into the opening 11, the free end of the suction line 15 reaches the bottom area of the pocket 9. Then it leaves the brake dust is sucked off by means of the blower 16 and collected in the air filter 18.
  • figure 4 shows a further embodiment of the lower part of the drum brake 1 from figure 1 with an opening 111.
  • the opening 111 has a tubular connection 114 on which a suction cup 113 is plugged.
  • the sucker 113 leads via a suction line 115 to an intake tract 116 of an internal combustion engine 117 of the motor vehicle.
  • the suction line 115 is guided into the bottom area of the pocket 9 .
  • the connection 114 has a pipe socket 119 for the permanent fixing of the suction line 115. Otherwise the embodiment is the same as that shown in FIG figure 2 designed.
  • FIG figure 5 shows a further embodiment of the lower part of the drum brake 1 from figure 1 with an opening 211.
  • the opening 211 has a tubular connection 214 for a teat, not shown here.
  • the tubular connection 214 has a pipe socket 219.
  • a collecting funnel 220 protrudes into the pocket 9 constructed as in the previously described embodiments.
  • the collecting funnel 220 protrudes directly in front of the friction surface 3 of the brake drum 2 and has a trough shape for collecting the brake dust.
  • FIG. 12 shows a sectional view through the embodiment according to FIG figure 5 along line VI - VI.
  • the collecting funnel 220 is arranged between two brake linings 4 .

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Braking Arrangements (AREA)

Description

Die Erfindung betrifft eine Trommelbremse für ein Kraftfahrzeug mit einer drehbar gelagerten Bremstrommel, mit einer radial nach innen weisenden Reibfläche, mit radial innerhalb der Reibfläche angeordneten Bremsbelägen, mit einem Aktor zur Vorspannung der Bremsbeläge gegen die Reibfläche und mit einem Ankerblech zur Halterung des Aktors, mit einer Öffnung zum Abführen von Bremsabrieb aus der Bremstrommel und mit einer Abdeckung der Bremstrommel.The invention relates to a drum brake for a motor vehicle with a rotatably mounted brake drum, with a friction surface pointing radially inwards, with brake linings arranged radially inside the friction surface, with an actuator for prestressing the brake linings against the friction surface and with an anchor plate for holding the actuator an opening for discharging brake dust from the brake drum and having a cover for the brake drum.

Die US 1 974 565 A bezieht sich auf eine quasihermetisch geschlossen anhand besonderer Abdichtungsmittel abgedichtet vorgelegte Trommelbremse für Kraftfahrzeuge umfassend eine drehbar gelagerte Bremstrommel, mit einer radial nach innen weisenden Reibfläche, mit radial innerhalb der Reibfläche angeordneten Bremsbelägen, mit einem nicht im Einzelnen beschriebenen Aktor zur Vorspannung der Bremsbeläge gegen die Reibfläche sowie mit einer Ankerplatte, wobei die Ankerplatte gemeinsam mit den Abdichtungsmitteln die Bremstrommel quasihermetisch verschließt. Eine besonders ausgewiesene Tasche zum konzentrierten Sammeln von Bremsabrieb ist nirgendwo beschrieben. Begleitend sowie zusammenfassend vermitteln die noch bekannte US 1 995 691 A , JP S59 34129 U , US 3 000 472 A sowie US 2 091 865 A einem Fachmann bestenfalls sehr allgemeine Erkenntnisse über andersartigen, allgemeinen Technologiehintergrund ohne besondere Relevanz.The U.S. 1,974,565 A refers to a drum brake for motor vehicles that is quasi-hermetically closed and sealed using special sealing means, comprising a rotatably mounted brake drum, with a friction surface pointing radially inward, with brake linings arranged radially inside the friction surface, with an actuator, not described in detail, for prestressing the brake linings against the friction surface and with an anchor plate, the anchor plate sealing the brake drum quasi-hermetically together with the sealing means. A specially designated bag for collecting concentrated brake dust is not described anywhere. Accompanying and summarizing convey the still known US 1 995 691 A , JP S59 34129 U , U.S. 3,000,472 A as well as U.S. 2,091,865 A at best very general knowledge about a different, general technological background without particular relevance for a person skilled in the art.

Eine gattungsgemäße Trommelbremse ist aus der WO 2018/054821 A1 bekannt. Bei dieser Trommelbremse ist an der Abdeckung unmittelbar an der Bremstrommel eine Öffnung mit horizontaler Achse angeordnet, an die eine mit einer Entstaubungseinheit versehene Saugeinrichtung angeschlossen ist. Die Saugeinrichtung hat die Aufgabe, ansammelnden Bremsstaub abzusaugen und dessen Emission in die Umgebung zu verhindern.A generic drum brake is from WO 2018/054821 A1 known. In this drum brake, an opening with a horizontal axis is arranged on the cover directly on the brake drum, to which a suction device provided with a dedusting unit is connected. The suction device has the task of sucking off accumulating brake dust and preventing its emission into the environment.

Nachteilig bei der bekannten Trommelbremse ist jedoch, dass die Anordnung der Öffnung mit der horizontalen Achse für die Absaugung ungünstig ist. Zudem ist bei dieser Anordnung der Öffnung die kontinuierliche Absaugung notwendig.The disadvantage of the known drum brake, however, is that the arrangement of the opening with the horizontal axis is unfavorable for the suction. In addition, with this arrangement of the opening, continuous suction is necessary.

Der Erfindung liegt das Problem zugrunde, eine Trommelbremse der eingangs genannten Art so weiter zu bilden, dass der Bremsabrieb einfach entfernt werden kann.The invention is based on the problem of developing a drum brake of the type mentioned at the outset in such a way that the brake dust can be easily removed.

Dieses Problem wird erfindungsgemäß dadurch gelöst, dass die Abdeckung eine Tasche zum Sammeln von Bremsabrieb begrenzt.According to the invention, this problem is solved in that the cover delimits a pocket for collecting brake dust.

Durch diese Gestaltung ermöglicht die Tasche ein Ansammeln des Bremsabriebs. Nach einer vorgesehenen Zeit oder einem vorgesehenen Füllstand an Bremsabrieb kann dieser über die Öffnung aus der Tasche beispielsweise durch Absaugung entfernt werden. Aus der Tasche lässt sich der Bremsabrieb besonders einfach entfernen. Daher ist eine kontinuierliche Absaugung nicht zwingend erforderlich.With this design, the pocket allows accumulation of brake dust. After a specified time or a specified filling level of brake dust, this can be removed from the pocket via the opening, for example by suction. It is particularly easy to remove the brake dust from the bag. Therefore, continuous suction is not absolutely necessary.

Die Tasche gestaltet sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung konstruktiv besonders einfach, wenn die Öffnung von dem Bodenbereich der Abdeckung beabstandet ist. Durch diese Gestaltung sammelt sich der Bremsabrieb durch die Schwerkraft unterhalb der Öffnung, so dass eine Freilegung der Öffnung nicht zu einem unbeabsichtigten Austreten von Bremsabrieb führt. Da die Öffnung vom Bodenbereich des Ankerblechs beabstandet ist, wird eine versehentliche Freisetzung von Bremsabrieb bei dessen Entfernung vermieden.According to another advantageous development of the invention, the pocket is structurally particularly simple if the opening is at a distance from the bottom area of the cover. With this design, the brake dust collects under the opening due to the force of gravity, so that an exposure of the opening does not lead to an unintentional escape of brake dust. Because the opening is spaced from the bottom portion of the lamination, accidental release of brake debris upon removal is avoided.

Die Abführung des Bremsabriebs gestaltet sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung besonders einfach, wenn die Öffnung in einen in die Tasche hineinragenden Auffangtrichter mündet. Der Auffangtrichter ermöglicht eine Sammlung des entstehenden Bremsabriebs. Der Bremsabrieb wird damit bei der Entstehung von der Paarung der Bremsbeläge und der Bremstrommel entfernt und in dem Auffangtrichter gesammelt. Weiterhin lässt sich mittels des Auffangtrichters lässt sich die Strömung bei der Abführung des Bremsabriebs beeinflussen.According to another advantageous development of the invention, the removal of the brake dust is particularly simple if the opening opens into a collecting funnel protruding into the pocket. The collecting funnel enables the resulting brake dust to be collected. The brake wear is thus removed from the mating of the brake pads and the brake drum as it arises and collected in the collecting funnel. Furthermore, the flow can be influenced when dissipating the brake dust by means of the collecting funnel.

Eine besonders zuverlässige Sammlung und Abführung des Bremsabriebs gestaltet sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung besonders einfach, wenn der Auffangtrichter zwischen zwei Bremsbelägen und unmittelbar oberhalb der Innenseite der Bremstrommel angeordnet ist und eine Muldenform zum Sammeln des Bremsabriebs hat.According to another advantageous development of the invention, particularly reliable collection and removal of the brake dust is particularly easy if the collecting funnel is arranged between two brake pads and directly above the inside of the brake drum and has a trough shape for collecting the brake dust.

Die Abmessungen der Tasche lassen sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung einfach begrenzen, wenn die Abdeckung einen vertikalen Abschnitt hat, wenn der vertikale Abschnitt einen Teilbereich der Tasche bildet und wenn die Öffnung oberhalb des vertikalen Abschnitts angeordnet ist.According to another advantageous development of the invention, the dimensions of the pocket can be easily limited if the cover has a vertical section, if the vertical section forms a partial area of the pocket and if the opening is arranged above the vertical section.

Die Abdeckung gestaltet sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung konstruktiv besonders einfach, wenn das Ankerblech und die Abdeckung einstückig gefertigt sind.According to another advantageous development of the invention, the cover has a particularly simple design if the anchor plate and the cover are manufactured in one piece.

Die Trommelbremse gestaltet sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung besonders kostengünstig, wenn die Öffnung von einem Stopfen verschlossen ist. Der Stopfen kann bei Inspektion entfernt und ein Saugrohr zur Absaugung des Bremsabriebs in die Tasche eingeführt werden.According to another advantageous development of the invention, the drum brake is particularly cost-effective if the opening is closed by a plug. The plug can be removed during inspection and a suction tube inserted into the pocket to suck off the brake dust.

Zur Vereinfachung einer kontinuierlichen oder diskontinuierlichen Entfernung des Bremsabriebs trägt es gemäß einer anderen vorteilhaften Weiterbildung der Erfindung bei, wenn die Öffnung einen Anschluss für eine Saugleitung hat. Die Saugleitung lässt sich zum Beispiel bei einer Inspektion des Kraftfahrzeuges an dem Anschluss anschließen oder zum kontinuierlichen Absaugen ständig angeschlossen halten.According to another advantageous development of the invention, it helps to simplify a continuous or discontinuous removal of the brake dust if the opening has a connection for a suction line. The suction line can be removed, for example, when inspecting the Connect the motor vehicle to the outlet or keep it connected at all times for continuous suction.

Eine kontinuierliche Absaugung des Bremsabriebs gestaltet sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung besonders einfach, wenn die Öffnung mit einem Luftfilter verbunden ist.According to another advantageous development of the invention, continuous extraction of the brake dust is particularly easy if the opening is connected to an air filter.

Die Anordnung eines separat zu montierenden Sauggebläses lässt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung vermeiden, wenn die Öffnung mit einem Ansaugtrakt einer Brennkraftmaschine verbunden ist. Durch diese Gestaltung wird der Bremsabrieb im ohnehin vorhandenen Luftfilter zurückgehalten.According to another advantageous development of the invention, the arrangement of a suction fan that is to be installed separately can be avoided if the opening is connected to an intake tract of an internal combustion engine. With this design, the brake dust is held back in the air filter that is already present.

Zur Vereinfachung der Absaugung des Bremsabriebs trägt es gemäß einer anderen vorteilhaften Weiterbildung der Erfindung bei, wenn die Tasche an ihrer Oberseite einen gegenüber dem vertikalen Abschnitt geneigten Abschnitt aufweist und wenn die Öffnung in dem geneigten Abschnitt angeordnet ist. Durch diese Gestaltung ist die Zugänglichkeit der Tasche von oben gewährleistet.According to another advantageous development of the invention, it helps to simplify the extraction of brake dust if the pocket has a section on its top that is inclined relative to the vertical section and if the opening is arranged in the inclined section. This design ensures that the bag can be accessed from above.

Die Saugleitung lässt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung einfach dauerhaft an der Öffnung fixieren, wenn die Öffnung einen Rohrstutzen hat.According to another advantageous development of the invention, the suction line can easily be permanently fixed to the opening if the opening has a pipe socket.

Die Erfindung lässt zahlreiche Ausführungsformen zu. Zur weiteren Verdeutlichung ihres Grundprinzips sind mehrere davon in der Zeichnung dargestellt und werden nachfolgend beschrieben. Diese zeigt in

Fig.1
vereinfacht einen Längsschnitt durch eine Trommelbremse,
Fig.2
einen Teilbereich einer ersten Ausführungsform der Trommelbremse aus Figur 1,
Fig.3
einen Sauger zum Anschluss an die Trommelbremse aus Figur 2.
Fig.4
einen Teilbereich einer zweiten Ausführungsform der Trommelbremse aus Figur 1,
Fig.5
einen Teilbereich einer dritten Ausführungsform der Trommelbremse aus Figur 1,
Fig.6
eine Schnittdarstellung der Ausführungsform nach Figur 3 entlang der Linie VI - VI.
The invention permits numerous embodiments. To further clarify their basic principle, several of them are shown in the drawing and are described below. This shows in
Fig.1
simplifies a longitudinal section through a drum brake,
Fig.2
a portion of a first embodiment of the drum brake figure 1 ,
Fig.3
a suction cup for connection to the drum brake figure 2 .
Fig.4
a portion of a second embodiment of the drum brake figure 1 ,
Fig.5
a portion of a third embodiment of the drum brake figure 1 ,
Fig.6
a sectional view of the embodiment figure 3 along line VI - VI.

Figur 1 zeigt vereinfacht einen Längsschnitt durch eine Trommelbremse 1 eines Kraftfahrzeuges mit einer drehbar gelagerten Bremstrommel 2 und einer radial nach innen weisenden Reibfläche 3. Radial innerhalb der Reibfläche 3 stehen der Bremstrommel 2 Bremsbeläge 4 gegenüber. Die Bremsbeläge 4 sind paarweise angeordnet, wie es in der Figur 6 dargestellt ist. Die Bremsbeläge 4 sind auf einem Ankerblech 5 gehalten und lassen sich von einem Aktor 6 gegen die Reibfläche 3 pressen. Das Ankerblech 5 hat eine einen Teilbereich der Bremstrommel 2 übergreifende Abdeckung 7. Zwischen der Bremstrommel 2, und einem vertikalen Abschnitt 8 der Abdeckung 7 ist eine Tasche 9 angeordnet, in der sich Bremsabrieb ansammelt. Das Ankerblech 5 hat in einem oberhalb des vertikalen Abschnitts 8 angeordneten geneigten Abschnitt 10 eine Öffnung 11. Die im vorliegenden Ausführungsbeispiel einstückig mit dem Ankerblech 5 gefertigte Abdeckung 7 dichtet die Tasche 9 gegenüber der Umgebung ab, so dass ein Eintrag von Bremsabrieb in die Umgebung verhindert wird. figure 1 shows a simplified longitudinal section through a drum brake 1 of a motor vehicle with a rotatably mounted brake drum 2 and a friction surface 3 pointing radially inwards. The brake pads 4 are arranged in pairs, as in the figure 6 is shown. The brake pads 4 are held on an anchor plate 5 and can be pressed against the friction surface 3 by an actuator 6 . The anchor plate 5 has a cover 7 that overlaps a portion of the brake drum 2. Between the brake drum 2 and a vertical section 8 of the cover 7 there is a pocket 9 in which brake dust accumulates. The anchor plate 5 has an opening 11 in an inclined section 10 arranged above the vertical section 8. The cover 7, which is manufactured in one piece with the anchor plate 5 in the present exemplary embodiment, seals the pocket 9 from the environment, so that an entry of brake dust into the environment is prevented becomes.

Figur 2 zeigt vergrößert den unteren Teilbereich der Trommelbremse 1 aus Figur 1 im Bereich der Öffnung 11. Die Öffnung 11 ist von einem Stopfen 12 verschlossen. Nach einer Entfernung des Stopfens 12 lässt sich ein in Figur 3 dargestellter Sauger 13 durch einen Anschluss 14 der Öffnung 11 einführen und den Bremsabrieb absaugen. figure 2 shows the lower part of the drum brake 1 enlarged figure 1 in the area of the opening 11. The opening 11 is closed by a plug 12. After removing the plug 12, an in figure 3 depicted Insert sucker 13 through a connection 14 of the opening 11 and suck off the brake dust.

Figur 3 zeigt schematisch einen Sauger 13 zum Anschluss an die Öffnung 11 aus Figur 2. Der Sauger 13 hat eine Saugleitung 15 zum Einführen in die Öffnung 11, ein Gebläse 16 und einen Luftfilter 18. Wenn man die Saugleitung 15 in die Öffnung 11 einführt, gelangt das freie Ende der Saugleitung 15 bis in den Bodenbereich der Tasche 9. Anschließend lässt sich der Bremsabrieb mittels des Gebläses 16 absaugen und in dem Luftfilter 18 auffangen. figure 3 shows schematically a suction cup 13 for connection to the opening 11 figure 2 . The teat 13 has a suction line 15 for insertion into the opening 11, a blower 16 and an air filter 18. When the suction line 15 is inserted into the opening 11, the free end of the suction line 15 reaches the bottom area of the pocket 9. Then it leaves the brake dust is sucked off by means of the blower 16 and collected in the air filter 18.

Figur 4 zeigt eine weitere Ausführungsform des unteren Teilbereichs der Trommelbremse 1 aus Figur 1 mit einer Öffnung 111. Die Öffnung 111 hat einen rohrförmigen Anschluss 114, auf dem ein Sauger 113 aufgesteckt ist. Der Sauger 113 führt über eine Saugleitung 115 zu einem Ansaugtrakt 116 einer Brennkraftmaschine 117 des Kraftfahrzeuges. Die Saugleitung 115 ist dabei bis in den Bodenbereich der Tasche 9 geführt. Hierdurch wird der Bremsabrieb kontinuierlich abgesaugt und in einem Luftfilter 118 der Brennkraftmaschine 117 aufgefangen. Zur dauerhaften Fixierung der Saugleitung 115 hat der Anschluss 114 einen Rohrstutzen 119. Ansonsten ist die Ausführungsform wie die aus Figur 2 gestaltet. figure 4 shows a further embodiment of the lower part of the drum brake 1 from figure 1 with an opening 111. The opening 111 has a tubular connection 114 on which a suction cup 113 is plugged. The sucker 113 leads via a suction line 115 to an intake tract 116 of an internal combustion engine 117 of the motor vehicle. The suction line 115 is guided into the bottom area of the pocket 9 . As a result, the brake dust is continuously extracted and collected in an air filter 118 of the internal combustion engine 117 . The connection 114 has a pipe socket 119 for the permanent fixing of the suction line 115. Otherwise the embodiment is the same as that shown in FIG figure 2 designed.

Figur 5 zeigt eine weitere Ausführungsform des unteren Teilbereichs der Trommelbremse 1 aus Figur 1 mit einer Öffnung 211. Wie bei der Ausführungsform nach Figur 4 hat die Öffnung 211 einen rohrförmigen Anschluss 214, für einen hier nicht dargestellten Sauger. Der rohrförmige Anschluss 214 hat einen Rohrstutzen 219. In die wie bei den zuvor beschriebenen Ausführungsformen aufgebaute Tasche 9 ragt ein Auffangtrichter 220 hinein. Der Auffangtrichter 220 ragt bis unmittelbar vor die Reibfläche 3 der Bremstrommel 2 und hat eine Muldenform zum Sammeln des Bremsabriebs. figure 5 shows a further embodiment of the lower part of the drum brake 1 from figure 1 with an opening 211. As in the embodiment according to FIG figure 4 the opening 211 has a tubular connection 214 for a teat, not shown here. The tubular connection 214 has a pipe socket 219. A collecting funnel 220 protrudes into the pocket 9 constructed as in the previously described embodiments. The collecting funnel 220 protrudes directly in front of the friction surface 3 of the brake drum 2 and has a trough shape for collecting the brake dust.

Figur 6 zeigt eine Schnittdarstellung durch die Ausführungsform nach Figur 5 entlang der Linie VI - VI. Hierbei ist zu erkennen, dass der Auffangtrichter 220 zwischen zwei Bremsbelägen 4 angeordnet ist. figure 6 FIG. 12 shows a sectional view through the embodiment according to FIG figure 5 along line VI - VI. Here it can be seen that the collecting funnel 220 is arranged between two brake linings 4 .

Claims (12)

  1. Drum brake (1) for a motor vehicle having a rotatably mounted brake drum (2), having a radially inward-facing friction surface (3), having brake linings (4) arranged radially inside the friction surface (3), having an actuator (6) for preloading the brake linings (4) against the friction surface (3), and having an anchor plate (5) for holding the actuator (6), having an opening (11, 111, 211) for discharging abraded brake particles from the brake drum (2), and having a cover (7) for the brake drum (2), characterized in that the cover (7) delimits a pocket (9) for collecting abraded brake particles.
  2. Drum brake according to Claim 1, characterized in that the opening (11, 111, 211) is spaced apart from the base region of the cover (7).
  3. Drum brake according to Claim 1 or 2, characterized in that the opening (211) opens into a collecting funnel (220) projecting into the pocket (9).
  4. Drum brake according to Claim 3, characterized in that the collecting funnel (220) is arranged between two brake linings (4) and directly above the inner side of the brake drum (2) and has a trough shape for collecting the abraded brake particles.
  5. Drum brake according to at least one of Claims 1 to 4, characterized in that the cover (7) has a vertical section (8), and the vertical section (8) has a partial region which forms the pocket (9), and in that the opening (11, 111, 211) is arranged above the vertical section (8).
  6. Drum brake according to at least one of Claims 1 to 5, characterized in that the anchor plate (5) and the cover (7) are manufactured in one piece.
  7. Drum brake according to at least one of Claims 1 to 6, characterized in that the opening (11) is closed by a plug (12).
  8. Drum brake according to at least one of Claims 1 to 7, characterized in that the opening (11, 111, 211) has a connection (14, 114, 214) for a suction line (15, 115).
  9. Drum brake according to at least one of Claims 1 to 8, characterized in that the opening (11, 111) is connected to an air filter (18, 118).
  10. Drum brake according to at least one of Claims 1 to 9, characterized in that the opening (11, 111, 211) is connected to an intake tract (116) of an internal combustion engine (117).
  11. Drum brake according to at least one of Claims 1 to 10, characterized in that the pocket (9) has on its upper side a section (10) which slopes relative to the vertical section (8), and in that the opening (11, 111, 211) is arranged in the sloping section (10).
  12. Drum brake according to at least one of Claims 1 to 11, characterized in that the opening (111, 211) has a tubular nozzle (119, 219).
EP20735127.1A 2019-06-28 2020-06-24 Drum brake for vehicle Active EP3990797B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019209518.6A DE102019209518A1 (en) 2019-06-28 2019-06-28 Drum brake for a motor vehicle
PCT/EP2020/067641 WO2020260360A1 (en) 2019-06-28 2020-06-24 Drum brake for a motor vehicle

Publications (2)

Publication Number Publication Date
EP3990797A1 EP3990797A1 (en) 2022-05-04
EP3990797B1 true EP3990797B1 (en) 2023-08-09

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Application Number Title Priority Date Filing Date
EP20735127.1A Active EP3990797B1 (en) 2019-06-28 2020-06-24 Drum brake for vehicle

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US (1) US11927229B2 (en)
EP (1) EP3990797B1 (en)
JP (1) JP2022536155A (en)
KR (1) KR20220006615A (en)
CN (1) CN114008345B (en)
BR (1) BR112021024977A2 (en)
DE (1) DE102019209518A1 (en)
WO (1) WO2020260360A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021203741A1 (en) 2021-04-15 2022-10-20 Continental Automotive Technologies GmbH Passenger vehicle wheel brake with particulate emission protection device
DE102021206164B4 (en) 2021-06-16 2023-08-24 Continental Automotive Technologies GmbH Wheel brake module with anti-emission device
DE102021213634A1 (en) 2021-12-01 2023-06-01 Continental Automotive Technologies GmbH Passenger vehicle wheel brake with improved brake emission control filter device

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US1919343A (en) * 1931-03-19 1933-07-25 Frank E Payne Dust collector for inclosed brake
US1995691A (en) * 1932-04-15 1935-03-26 Motor Wheel Corp Brake drum assembly
US1974565A (en) * 1933-10-26 1934-09-25 Bendix Aviat Corp Brake
US2042750A (en) * 1934-08-13 1936-06-02 Motor Wheel Corp Brake drum construction
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Publication number Publication date
CN114008345A (en) 2022-02-01
WO2020260360A1 (en) 2020-12-30
KR20220006615A (en) 2022-01-17
BR112021024977A2 (en) 2022-01-25
DE102019209518A1 (en) 2020-12-31
US20220356920A1 (en) 2022-11-10
CN114008345B (en) 2023-12-01
JP2022536155A (en) 2022-08-12
EP3990797A1 (en) 2022-05-04
US11927229B2 (en) 2024-03-12

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